Investigation of ductile fracture in fine-blanking process by finite elemnent method
Trans. Noferrous Met. Soc. China, Apr. 2002, Vol, 12 No.5，-0001，（）：
In order to continuously analyze the whole fine-blanking process, from the beginning of the ooperation up to the total rupture of the sheet-meta, without computational divergenec, a 3-Drigid visro-plastic element method based on Gurson void model was developed. The void volume fraction wasintrodced into the fineite elment anethod to document to the virtual work theory in which both the sheet was prodicted and the crack propagation was geometrically fulfilled in the simulation by separating the nodes according the stress state. Furthermore the influences of different state-variables on the defomation process were also studied.
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